List of Rock Types - Igneous

Igneous

Andesite - an Intermediate volcanic rock
Anorthosite - an igneous ultramafic rock composed predominantly of plagioclase
Aplite - a very fine grained intrusive igneous rock
Basalt - a volcanic rock of mafic composition
Adakite - a class of basaltic rocks containing low yttrium and ytterbium
Hawaiite - a class of basalts formed from ocean island (hot spot) magmatism
Basanite - a volcanic rock of mafic composition; essentially a silica undersaturated basalt
Boninite - a high-magnesian basalt dominated by pyroxene
Carbonatite - a rare igneous rock composed of >50% carbonate minerals
Charnockite - a type of granite containing pyroxene
Enderbite - a variety of charnockite
Dacite - a felsic to intermediate volcanic rock with high iron content
Diabase or dolerite - an intrusive mafic rock forming dykes or sills
Diorite - a coarse grained intermediate plutonic rock composed of plagioclase, pyroxene and/or amphibole
Dunite - an ultramafic cumulate rock composed of olivine and accessories
Essexite - a silica undersaturated mafic plutonic rock (essentially a foid-bearing gabbro)
Foidolite - a plutonic igneous rock composed of >90% feldspathoid minerals
Gabbro - a coarse grained plutonic rock composed of pyroxene and plagioclase basically equivalent to basalt
Granite - a coarse grained plutonic rock composed of orthoclase, plagioclase and quartz
Granodiorite - a granitic plutonic rock with plagioclase > orthoclase
Granophyre - a subvolcanic intrusive rock of granitic composition
Harzburgite - a variety of peridotite; an ultramafic cumulate rock
Hornblendite - a mafic or ultramafic cumulate rock dominated by >90% hornblende
Hyaloclastite - a volcanic rock composed primarily of glasses and glassy tuff
Icelandite - a volcanic rock
Ignimbrite - a fragmental volcanic rock
Ijolite - a very rare silica-undersaturated plutonic rock
Kimberlite - a rare ultramafic, ultrapotassic volcanic rock and a source of diamonds
Komatiite - an ancient ultramafic volcanic rock
Lamproite - an ultrapotassic volcanic rock
Lamprophyre - an ultramafic, ultrapotassic intrusive rock dominated by mafic phenocrysts in a feldspar groundmass
Latite - a silica undersaturated form of andesite
Lherzolite - an ultramafic rock, essentially a peridotite
Monzogranite - a silica undersaturated granite with <5% normative quartz
Monzonite - a plutonic rock with <5% normative quartz
Nepheline syenite - a silica undersaturated plutonic rock with nepheline replacing orthoclase
Nephelinite - a silica undersaturated plutonic rock with >90% nepheline
Norite - a hypersthene bearing gabbro
Obsidian - a type of volcanic glass
Pegmatite - an igneous rock (or metamorphic rock) with giant sized crystals
Peridotite - a plutonic or cumulate ultramafic rock composed of olivine and pyroxene
Phonolite - a silica undersaturated volcanic rock; essentially similar to nepheline syenite
Picrite - an olivine-bearing basalt
Porphyry - a rock, usually granitic, with a porphyritic texture
Pumice - a fine grained, extremely vesicular volcanic rock
Pyroxenite - a coarse grained plutonic rock composed of >90% pyroxene
Quartz diorite - a diorite with >5% modal quartz
Quartz monzonite - an intermediate plutonic rock, essentially a monzonite with 5-10% modal quartz
Rhyodacite - a felsic volcanic rock which is intermediate between a rhyolite and a dacite
Rhyolite - a felsic volcanic rock
Comendite - a peralkaline rhyolite
Pantellerite - an alkaline rhyolite-rhyodacite with amphibole phenocrysts
Scoria - an extremely vesicular mafic volcanic rock
Sovite - a coarse grained carbonatite rock
Syenite - a plutonic rock dominated by orthoclase feldspar; a type of granitoid
Tachylyte - essentially a basaltic glass
Tephrite - a silica undersaturated volcanic rock
Tonalite - a plagioclase-dominant granitoid
Trachyandesite - an alkaline intermediate volcanic rock
Benmoreite - sodic trachyandesite
Basaltic trachyandesite
Mugearite - sodic basaltic trachyandesite
Shoshonite - potassic basaltic trachyandesite
Trachyte - a silica undersaturated volcanic rock; essentially a feldspathoid-bearing rhyolite
Troctolite - a plutonic ultramafic rock containing olivine, pyroxene and plagioclase
Trondhjemite - a form of tonalite where plagioclase-group feldspar is oligoclase
Tuff - a fine grained volcanic rock formed from volcanic ash
Websterite - a type of pyroxenite, composed of clinoproxene and orthopyroxene
Wehrlite - an ultramafic plutonic or cumulate rock, a type of peridotite, composed of olivine and clinopyroxene

Read more about this topic:  List Of Rock Types

Other articles related to "igneous":

Melt Inclusions
... that are entrapped by crystals growing in the magmas and eventually forming igneous rocks ... and a range of chemical microanalysis techniques geochemists and igneous petrologists can obtain a range of unique information from melt inclusions ... They occur in the crystals can be found in igneous rocks, such as for example quartz, feldspar, olivine, pyroxene, nepheline, magnetite, perovskite and apatite ...
Chromitite
... Chromitite is an igneous cumulate rock composed mostly of the mineral chromite ... in layered intrusions such as the Bushveld Igneous Complex in South Africa, the Stillwater igneous complex in Montana and the recent Ring of Fire discovery in Ontario ...
Carrizo Mountains - Geology
... The Carrizo Mountains primarily consist of igneous rocks that intruded Permian through Cretaceous marine strata ... The most common igneous rock type is porphyritic hornblende diorite ... Ages of the igneous rocks range from 70 to 74 million years ...
Lopolith
... A lopolith is a large igneous intrusion which is lenticular in shape with a depressed central region ... include the Duluth gabbro, the Sudbury Igneous Complex of Ontario, the Bushveld igneous complex of South Africa, the Great Dyke in Zimbabwe, the Skaergaard ...
Skaergaard Intrusion
... -31.7169 The Skaergaard intrusion is a layered igneous intrusion in East Greenland ... the intrusion has been important to the development of key concepts in igneous petrology, including magma differentiation and fractional crystallisation and the development of layering ... which together with coeval flood basalts are part of the North Atlantic large igneous province ...